Chemical Engineering — Test 203
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Question 1
Exposure to SO2 containing chimney gases results in the__________________?
Question 2
Which is the most widely used coagulant for the treatment of turbid water ?
Question 3
Higher concentration of nitrogen dioxide in atmospheric air causes___________________?
Question 4
A man exposed to excessive noise level in the working environment may suffer from____________________?
Question 5
5-200 μm size particles are called__________________?
Question 6
Lagoons used for purification of polluted water_______________?
Question 7
Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about ____________ decibels?
Question 8
Presence of nitrogen and phosphorous in waste water discharged into lakes and ponds causes_______________?
Question 9
TLV of lead for public sewer/waste water is about ______________ ppm?
Question 10
Which of the following is a secondary air pollutant ?